Operating voltage

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The CP-500 preampliﬁer is set at the factory for 100V, 120V, 230V, or 240V AC mains operation, as appropriate for the country in which it is to be sold (230V only in European Union countries, in compliance with CE regulations). The voltage setting may not be changed by the user.

Make sure that the label on the rear panel of your preampliﬁer indicates the correct AC operating voltage for your location. Attempting to operate your preampliﬁer at an incorrect voltage may damage the unit.

The voltage setting of your power ampliﬁer may not be changed by the user. There are no user-serviceable parts within the unit. Please refer any problems to an authorized Classé service center.

If the AC mains voltage indicated on your preampliﬁer is incorrect, please contact your local, authorized Classé dealer or distributor.

The CP-500 can easily be powered by a normal 15-ampere AC mains line. If other devices are also powered from the same AC line, their additional power consumption should be taken into account.

The CP-500 includes protection circuitry that will prevent the preampliﬁer from operating at dangerously high or low voltages.

•At startup: the AC mains voltage must be within a range of approximately -15% to +10% of its nominal value at startup, or the preampliﬁer will not turn on. For example, a 120V unit requires the AC mains to be between approximately 95V–135V in order to turn on.

•Over-voltage during operation: if the AC mains voltage surges by roughly 10% or more during operation, the preampliﬁer will enter protection mode and shut down. The Standby LED will ﬂash to indicate the protection mode has been engaged.

•Under-voltage during operation: if the AC mains voltage sags by 15% or more, the preampliﬁer will continue to play (since this does not present a particular danger to the unit), but note that it may not be able to achieve its usual standard of performance under these compromised conditions. The Standby LED will ﬂash to indicate the condition.

CP-500 specifications

The Classe Audio CP-500 is a high-performance stereo preamplifier that has become a staple in the audiophile community due to its impressive sound quality and innovative design. This preamp is crafted with meticulous attention to detail, aimed at delivering pure audio fidelity and an immersive listening experience.

One of the standout features of the CP-500 is its lightweight yet robust chassis, which is designed to minimize resonance and interference, ensuring that the signal path remains clean. The unit incorporates a sophisticated custom power supply that provides stable and reliable energy, reducing noise and enhancing overall performance.

At the heart of the CP-500's design is its high-quality analog signal path. The preamplifier uses high-grade components, including premium capacitors and resistors, to retain the integrity of the audio signal. This design philosophy is reflected in the preamp's exceptional frequency response and low total harmonic distortion (THD), making it a superb choice for discerning listeners who demand the best from their audio systems.

The CP-500 also features balanced and unbalanced inputs and outputs, providing flexibility for various system configurations. The inclusion of both XLR and RCA connectivity allows users to seamlessly integrate the preamp into their setups, whether they use studio-grade equipment or home audio devices. Additionally, it supports multiple source inputs, making it versatile for any audio collection.

Another notable characteristic is the preamp's intuitive user interface. The front panel includes a clear display and ergonomically placed controls, making it easy to navigate through various settings and source choices. The remote control adds convenience, allowing users to adjust volume levels and switch inputs from anywhere in the listening environment.

Classe Audio places a strong emphasis on compatibility, particularly with their amplifiers, ensuring that the CP-500 works harmoniously with their line of high-performance power amplifiers. This synergy allows for an optimal audio experience, highlighting the capabilities of both the preamp and amplifier, resulting in sound that is both dynamic and nuanced.

In conclusion, the Classe Audio CP-500 preamplifier is a prime example of high-fidelity audio engineering. Its combination of superior build quality, advanced technology, and elegant design makes it an excellent choice for audiophiles seeking to elevate their sound systems. Whether used for critical listening or simply enjoying music, the CP-500 delivers an exquisite sonic experience that stands the test of time.